diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-07-21 22:59:56 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-22 10:43:45 +0200 |
| commit | 77be1fabd024b37423d12f832b1fbdb95dbdf494 (patch) | |
| tree | b1fa99ff9b1c0bcb63c7a602a425d72b24c1ede6 /include | |
| parent | 59438c9fc4f7a92c808c9049bc6b396f98bf954c (diff) | |
| download | op-kernel-dev-77be1fabd024b37423d12f832b1fbdb95dbdf494.zip op-kernel-dev-77be1fabd024b37423d12f832b1fbdb95dbdf494.tar.gz | |
x86: add PTE_FLAGS_MASK
PTE_PFN_MASK was getting lonely, so I made it a friend.
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/page.h | 5 | ||||
| -rw-r--r-- | include/asm-x86/pgtable.h | 2 | ||||
| -rw-r--r-- | include/asm-x86/pgtable_32.h | 2 |
3 files changed, 6 insertions, 3 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index e99fb9f..6c84622 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -21,6 +21,9 @@ /* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */ #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) +/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */ +#define PTE_FLAGS_MASK (~PTE_PFN_MASK) + #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) @@ -146,7 +149,7 @@ static inline pteval_t native_pte_val(pte_t pte) static inline pteval_t native_pte_flags(pte_t pte) { - return native_pte_val(pte) & ~PTE_PFN_MASK; + return native_pte_val(pte) & PTE_FLAGS_MASK; } #define pgprot_val(x) ((x).pgprot) diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 2b1746c..3e5dbc4 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -286,7 +286,7 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot) return __pgprot(preservebits | addbits); } -#define pte_pgprot(x) __pgprot(pte_flags(x) & ~PTE_PFN_MASK) +#define pte_pgprot(x) __pgprot(pte_flags(x) & PTE_FLAGS_MASK) #define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask) diff --git a/include/asm-x86/pgtable_32.h b/include/asm-x86/pgtable_32.h index 525b53e..5c3b265 100644 --- a/include/asm-x86/pgtable_32.h +++ b/include/asm-x86/pgtable_32.h @@ -88,7 +88,7 @@ extern unsigned long pg0[]; /* To avoid harmful races, pmd_none(x) should check only the lower when PAE */ #define pmd_none(x) (!(unsigned long)pmd_val((x))) #define pmd_present(x) (pmd_val((x)) & _PAGE_PRESENT) -#define pmd_bad(x) ((pmd_val(x) & (~PTE_PFN_MASK & ~_PAGE_USER)) != _KERNPG_TABLE) +#define pmd_bad(x) ((pmd_val(x) & (PTE_FLAGS_MASK & ~_PAGE_USER)) != _KERNPG_TABLE) #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) |
